Conclusion
An analysis was performed of heat transfer from castings into shell moulds and into the surroundings. Experimental measure-
ment of temperature fields in a model example of a system of cylindrical castings was carried out. The aim of the measure- ment was to verify the calculations of temperature fields estab- lished by numerical simulation using the ProCast software.
(a)
(b)
Figure 18. Comparison of measured and simulated temperatures of dia. 50, 30 and 20 mm (1.96, 1.18, 0.78 in) castings; a) before data modification, b) after modification of boundary conditions.
Figure 19. Simulation of solidification of castings in test mould (the time corresponds to solidification of dia. 50 mm (1.96 in) cylinders).
Figure 20. Simulation of the structure of dia. 50 mm (1.96
in) cylinder, and comparison with metallographic specimen. (Black point is a cut across the thermocouple.)
International Journal of Metalcasting/Spring 10 79
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